Silbione® LIQUID SILICONE RUBBERS (LSRs) are two-component platinum-catalyzed
silicone elastomers designed for liquid injection molding healthcare and medical devices,
including applications of less than 30-day implantation in the human body.
Available in a full range of hardnesses from 01 to 70 durometer – Shore A, Elkem Silicones’
Silbione® LSRs offer the distinctive advantages of easy processing and release combined
with high performance physical properties.
Designed specifically for healthcare applications, Silbione® LIQUID SILICONE RUBBERS
LSRs meet or exceed testing requirements of United States Pharmacopoeia (USP) Class VI.
Biocompatibility testing addresses the categories of evaluation for cytotoxicity, skin sensitization
and skin irritation specified in ISO 10993 for skin contact or device use of less than 30-day
Silbione® LSRs are supplied as kit-matched products. Parts A and B components are
designed to be mixed in equal parts using standard liquid injection molding pumping and
metering equipment and techniques. Airless mixing, metering and dispensing equipment are
Cure is initiated once the two part A and part B components are mixed and can be accelerated
by heating the mixed elastomer. Cure is dependent upon molding temperature and part size.
Special care must be taken to assure clean molds and a clean work area with no organic
rubbers used on the same processing equipment.
Caution: Traces of foreign materials can poison the catalyst and inhibit the cure. All metering
and mixing equipment should be thoroughly cleaned. Polymer systems, which contain traces of
amines, sulfur, nitrogen oxide, organotin compounds and carbon monoxide can interfere with
the cure of this product and should be avoided.
Note: Kit matching, accurate measuring and complete mixing are essential factors in obtaining
Liquid Silicone Rubber
Silbione® LSR 4300 SERIES